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This dissertation aims to: improvement in regularity of ladderlike polysiloxane through strong H-bonding template and"half-water-hydrolysis"methods; synthesis of several functional polysilsequioxane with ethoxyl, hydro and aminopropyl groups respectively; and the preparation of nanoporous film with good mechanic properties from ladderlike functional polysilsesquioxane with intermolecular porogen via micro-phase separation process.

本论文旨在利用强氢键模板作用和"半水水解-脱氯化氢缩聚"的改进方法,提高反应性的梯形聚硅氧烷的规整度;合成乙氧基封端、含氢基和氨丙基的几种功能性梯形聚硅氧烷;以及探索利用含分子内成孔剂的梯形聚倍半硅氧烷通过微相分离制备低介电常数二氧化硅纳米微孔膜。

in order to probe into whether glycine supplementation plays an adjusting role in sports performance and immune functions, the authors divided 30 mice randomly into an exhaustive exercising group (e1), glycine supplemented exhaustive exercising group (e2) and a normal resting control group, with 10 mice in each group, supplemented glycine to mice in group e2 and physiological saline to mice in the other two groups, let mice in groups e1 and e2 do an exhaustive swimming exercise 4 weeks later, applied the trace ch50 hemolysis method to analyze supplement activity, applied the mtt method to perform a quantitative analysis on the lymphopoiesis ability of spleen, and thus revealed the following findings: compared with mice in group e1, the time taken by mice in group e2 to swim to an exhausted state is significantly longer (p.05); total supplement activity in blood serum of mice in group e1 is significantly lower than the same of mice in group s (p<0.01), and total supplement activity in blood serum of mice in group e2 is significantly higher than the same of mice in group e1 (p.01), but still significantly lower than the same of mice in group s (p.05); as observed from the test of the lymphopoiesis ability of spleen, the lymphopoiesis ability of spleen of mice in group e1 is significantly lower than the same of mice in group s, and the lymphopoiesis ability of spleen of mice in group e2 is significantly higher than the same of mice in group e1, but still significantly lower than the same of mice in group s.

四型肽精氨酸脱氨酶在类风湿性关节炎。。。以马来酸酐与氨水为原料热缩聚法合成。。。摘要:为探讨甘氨酸补充对运动能力及免疫功能是否具有调节作用,将30只小鼠随机分成力竭游泳运动组(e1)、甘氨酸补充后力竭游泳组(e2)和静息正常对照组,每组10只。在e2组补充甘氨酸,其余两组给予生理盐水,处理4周后,e1组和e2组均做力竭性游泳运动。采用微量ch50溶血法分析补体活性,采用mtt法定量分析脾脏淋巴细胞增殖能力。结果显示,与e1组比较,e2组游泳至力竭的时间显著延长(p<0.01)。e1组血清总补体活性显著低于s组(p<0.01),e2组显著高于e1组(p.01),但仍显著低于s组(p.05)。在脾脏淋巴细胞增殖试验中观察到,e1组显著低于s组,e2组显著高于e1组但仍显著低于s组。

Therelationship of the amount of catalyst and the ee% of product was seen to be negative nonlin-ear. Catalyst 3 was used in the enantioselective addition of diethylzinc to aromatic aldehydesand gave good results. The configuration of products was determined by the configuration ofthe catalysts' chiral carbon linked with hydroxy group. Using β- amino alcohols bearing only one chiral center as catalysts for the enantiose-lective addition were studied. D-N, N-dialkyl-2-amino butanol gave poor catalytic effect be-cause of their structure. The configuration of the product is the same as the catalyst. Anotherkind of β- amino alcohols - phenylglycine derivatives and valine derivatives have chiralcenter on the carbon linked with amino group. Catalyzed by-phenylglycine derivatives 6,7, 9, 10, the reactions gave satisfied results. The optical yields exceeded 80%.

在探讨了含有两个手性中心的β-氨基醇之后,选择了只有一个手性中心的β-氨基醇,一是手性中心为连羟基的手性碳原子:D-N,N-二烷基-2-氨基丁醇;二是手性中心为连氨基的手性碳原子:D-苯基甘氨酸衍生物和L-缬氨酸衍生物。D-2-氨基丁醇的催化效果不太好,这与其结构的空间位阻较小有关系,反应产物与连羟基手性碳构型一致;由苯基甘氨酸和缬氨酸出发合成五种β-氨基醇6-10,研究了不同ee%的-6作用下的二乙基锌-苯甲醛加成反应,发现该催化剂具有不对称放大效应;-7,9,lO的催化效果也比较令人满意,光学产率80%以上,所得产物构型与催化剂构型一致。

The purpose of this paper is to synthesize some phosphonium salts with PPh3 and some chiral quaternary ammonium salts with L-Valine. And we also use L-Valine and L-Phe-OMe to synthesize a new type catalyst —2,5-diketopiperazine , the simplest compound of cyclo-peptide.

本文利用廉价易得的三苯基磷和手性L-缬氨酸作为起始原料,合成了几种普通季鏻盐和手性季铵盐,并且利用L-缬氨酸与L-苯丙氨酸甲酯反应,合成了一种新型的相转移催化剂——2,5-二酮哌嗪环类的化合物。

Neomycin on ammonia acid can lead to vitamin B12 deficiency; phenytoin, methotrexate, B ammonia pyrimidine, methyl benzyl ammonium pyrimidine and Triamterene, etc. can cause folic acid deficiency; mercaptopurine, 5 - fluoro-piperidine urine density, Ara-C, etc. can interfere with nucleic acid synthesis, these drugs can lead to megaloblastic anemia.

新霉素、对氨水杨酸可导致维生素B12缺乏;苯妥英钠、甲氨蝶呤、乙氨嘧啶、甲基苄氨嘧啶及氨苯蝶啶等可引起叶酸缺乏;巯嘌呤、5--氟尿密啶、阿糖胞苷等能够干扰核酸的合成,这些药物都可导致巨幼红细胞性贫血。

Polyethylene glycol ethers of alkyl alcohols having the general formula CH3(CH2)xCH2(OCH2CH2)nOH wherein x is 8 to 20 (of which ceteareth-20, steareth-20 and steareth-100 are preferred), poloxamer 185, poloxamer 407, N,N-dimethyl dodecylamine N-oxide, and mixtures thereof, are employed to increase follicular delivery and/or follicular residence time of certain water soluble ornithine decarboxylase inhibitors of which 2-2,5-diamino pentanoic acid and its pharmaceutically acceptable salts, hydrates, optical enantiomers and racemic mixture are preferred.

使用通式为CH3(CH2)xCH2(OCH2CH2)nOH的烷基醇的聚乙二醇醚,其中x为8-20(其中鲸蜡硬脂醇醚-20、硬脂醇醚-20和硬脂醇醚-100是优选的)、poloxamer 185、poloxamer 407、N,N-二甲基十二烷胺N-氧化物及其混合物来提高某些水溶性的鸟氨酸脱羧酶抑制剂的毛囊传输和/或毛囊停留时间,优选的抑制剂是2--2,5-二氨基戊酸及其药学上可接受的盐、水合物、光学对映异构体及外消旋混合物。

In order to obtain versatile ulitity of host molecules, three new chiral calix [4] crown ethers containing aza, thio atoms bearing two chiral sites provided by -cysteine ester were synthesized by the condensation of calix [4] arene diacid dichloride with oligoethylene glycol bridged bis-amino acid methyl ester. All new compounds were characterized by NMR, MS and elemental analysis.

以-半胱氨酸为手性源,利用多甘醇二氯醚在碱性条件下对半胱氨酸巯基进行烷基化反应,成功地合成了多甘醇醚链桥联的半胱氨酸衍生物,醚化反应后,在高度稀释条件下与对叔丁基杯[4]芳烃二乙酰氯进行双功能基缩合反应成功地合成了新型的手性杯[4]含氮、硫杂冠醚,并利用〓H NMR、MS等谱图手段对其结构进行了表征。

Respectively, glutamic acid derivatized β-CD has been synthesized with epoxy chloropropane as the intermediate, a water-insoluble yellow liquid was got after the acetylating of the by using acetic anhydride, which was used as a novel gas chromatographic CSP; A water-soluble β-CD polymer cross-linked with epoxy chloropropane has been synthesized, and the derivatives of β-CD polymer were synthesized by its alkylating and acetylating. The different β-CD derivatives were coated on silica capillary columns by dynamic method, the chromatographic properties and retention behaviors of the fused silica capillary columns were studied, the results showed that the β-CD derivatives had good stereoselectivity and separation results to some compounds, especially to various positional isomers and enantiomers.

本文还分别以环氧氯丙烷为中间体,合成了七{2,6-二-O-[3-(1,3-二羟基丙氨酸)]}-β-环糊精,再用醋酸酐将其乙酰化,得到了一种淡黄色粘稠液体,合成了一种新型的环糊精衍生物;以环氧氯丙烷作交联剂合成了一种水溶性的β-环糊精聚合物,再将其烷基化和酰基化,合成了β-环糊精聚合物的不同衍生物,用动态法将不同类型的β-环糊精衍生物涂渍在石英毛细管柱上,通过对所制备柱柱性能的测试和对一系列化合物的分离和保留行为的研究,结果表明所合成的β-环糊精衍生物对各类化合物,特别是对位置异构体和对映异构体具有较好的分离效果,显示了很强的立体选择性。

Results: 1. The value of all experimental indexes decreased significantly after heat stress, and reached the lowest at the time 2-8 hours after heat stress. This indicates that the immunity of the mice is damaged to the largest extent at 2-8 hours after heat stress. 2. L-arginine supplementation with appropriate dose could remit the acute atrophying of thymus and spleen tissue caused by heat stress. 3. After L-arginine supplementation with appropriate dose, the lymphocyte proliferation, the level of concentration of IL-2 and * expression of IL-2R raised in the group with room temperature; in the heat stress group the level of three indexs decrease significantly. Furthermore, the decrease of the group given 1 .Smglg.bw L-arginine is the smallest. This result indicates that the concentration of 1 .Smglg.bw L-arginine supplementation could remit the depressment of the immunity caused by heat stress. 4. The [Ca2~] in activated thymocytes of the group with L-arginine -2- supplementation is significantly higher than that of the group with water supplementation. This indicates that L-arginine supplementation could protect thymoeytes of mouse under heat stress. We also found that the fluorescence intensity of [Ca2~] in activated thymocytes of the group given 1 .Smglg.bw L-arginine is the highest.

结果:1、热应激后小鼠的各项免疫指标均有显著性下降,其中在2.8小时降到最低,提示在这个时间段小鼠的免疫功能受到最大损害;2、适量补充精氨酸有助于缓解热应激导致小鼠胸腺和脾脏的急性萎缩;3、常温组,补充适量精氨酸后小鼠淋巴细胞增殖活性、IL-2的浓度及IL-2R的表达均有显著性上升,而热应激后三指标均显著降低,其中在精氨酸给予浓度为1.5mg/g.bw时三指标的降低程度最少,提示该浓度可最大程度缓解热应激对小鼠免疫功能的抑制;4、补充精氨酸组的活化胸腺细胞[Ca~(2+)]较给水组有显著性上升,说明精氨酸对热应激小鼠胸腺细胞具有保护作用,并发现在精氨酸给予浓度为1.5mg/g.bw时活化胸腺细胞的胞浆钙离子荧光强度达到最大;5、热应激后小鼠血清NO的浓度均有不同程度的上升,补充精氨酸后血清NO上升更加明显,但并非随精氨酸给予浓度的增加而增加。

Using acetone as a photosensitizer,and N3· as an oxidant by pulse radiolysis method,the induced oxidation of cyclic-Phe-His in aqueous solution has been also reported in this paper,results similar to the photoionization of cyclic-Phe-His have been found.

而具有亲电子性的丙酮能在该环肽的苯丙氨酸残基的苯环上抽取电子,形成320nm和410nm的特征吸收峰,求出了自由基的有关动力学参数,并用脉冲辐解动态吸收光谱法印证了上述结果。

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If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了,请告诉我,我会帮助你摆脱困境,真的,请联系我啦!

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放,就是一个这样的例子。

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那么,杰瑞会急促背诵那部电影所有细节。